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A source of sound emitting a note of fre...

A source of sound emitting a note of frequency 90 Hz moves towards an observer with speed equal to ` ( (1)/( 10 ) )^(th ) ` of velocity of sound.The frequency of the note heard by the observer will be

A

100 Hz

B

82 Hz

C

200 Hz

D

90 Hz

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The correct Answer is:
A
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